捕捉DataGrid的双击事件(C#版本)

作者： 孟宪会 出自： 【孟宪会之精彩世界】 发布日期： 2003-7-27 11:00:48

以下是C#代码

namespace DataGridDoubleClick
{
    using System;
    using System.Drawing;
    using System.Collections;
    using System.ComponentModel;
    using System.Windows.Forms;
    using System.Data;

    public class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.DataGrid dataGrid1;
        private DataSet myDataSet;
        DateTime gridMouseDownTime;
        private System.Windows.Forms.Label label1;
        
        private System.ComponentModel.Container components = null;

        public Form1()
        {
            InitializeComponent();
            gridMouseDownTime = DateTime.Now;
            SetUp();
        }

        private void SetUp()
        {
            // 用2个Table和1和Relation创建DataSet
            MakeDataSet();
            // 数据绑定
            dataGrid1.SetDataBinding(myDataSet, "Customers");
            //添加样式
            AddCustomDataTableStyle();
        }

        private void MakeDataSet()
        {
            // 创建DataSet.
            myDataSet = new DataSet("myDataSet");            
            // 创建2个DataTables.
            DataTable tCust = new DataTable("Customers");
            
            // 创建两个列，并添加到第一个表
            DataColumn cCustID = new DataColumn("custID");
            DataColumn cCustName = new DataColumn("custName");
            DataColumn cCurrent = new DataColumn("custCity");
            tCust.Columns.Add(cCustID);
            tCust.Columns.Add(cCustName);
            tCust.Columns.Add(cCurrent);

            // 把tables添加到DataSet.
            myDataSet.Tables.Add(tCust);            
        
            /* 计算tables.对每个客户，创建DataRow变量 */
            DataRow newRow1;
            
            // 添加记录到 Customers Table.
            for(int i = 1; i < 4; i++)
            {
                newRow1 = tCust.NewRow();
                newRow1["custID"] = (100*i).ToString();
                tCust.Rows.Add(newRow1);
            }

            tCust.Rows[0]["custName"] = "【孟宪会之精彩世界】";
            tCust.Rows[1]["custName"] = "net_lover";
            tCust.Rows[2]["custName"] = "http://xml.sz.luohuedu.net/";

            tCust.Rows[0]["custCity"] = "北京";
            tCust.Rows[1]["custCity"] = "上海";
            tCust.Rows[2]["custCity"] = "河南";
        }

        private void AddCustomDataTableStyle()
        {
            DataGridTableStyle ts1 = new DataGridTableStyle();
            ts1.MappingName = "Customers";
            // 设置属性
            ts1.AlternatingBackColor = Color.LightGray;

            // 添加Textbox列样式，以便我们捕捉鼠标事件
            DataGridTextBoxColumn TextCol = new DataGridTextBoxColumn();
            TextCol.MappingName = "custID";
            TextCol.HeaderText = "序号";
            TextCol.Width = 100;

            //添加事件处理器
            TextCol.TextBox.MouseDown += new MouseEventHandler(TextBoxMouseDownHandler);
            TextCol.TextBox.DoubleClick += new EventHandler(TextBoxDoubleClickHandler);
            ts1.GridColumnStyles.Add(TextCol);

            TextCol = new DataGridTextBoxColumn();
            TextCol.MappingName = "custName";
            TextCol.HeaderText = "姓名";
            TextCol.Width = 100;
            //添加事件处理器
            TextCol.TextBox.MouseDown += new MouseEventHandler(TextBoxMouseDownHandler);
            TextCol.TextBox.DoubleClick += new EventHandler(TextBoxDoubleClickHandler);
            ts1.GridColumnStyles.Add(TextCol);

            TextCol = new DataGridTextBoxColumn();
            TextCol.MappingName = "custCity";
            TextCol.HeaderText = "地址";
            TextCol.Width = 100;
            //添加事件处理器
            TextCol.TextBox.MouseDown += new MouseEventHandler(TextBoxMouseDownHandler);
            TextCol.TextBox.DoubleClick += new EventHandler(TextBoxDoubleClickHandler);
            ts1.GridColumnStyles.Add(TextCol);
        
            dataGrid1.TableStyles.Add(ts1);            
        }

        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null) 
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        private void InitializeComponent()
        {
            this.dataGrid1 = new System.Windows.Forms.DataGrid();
            this.label1 = new System.Windows.Forms.Label();
            ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
            this.SuspendLayout();
            // 
            // dataGrid1
            // 
            this.dataGrid1.CaptionBackColor = System.Drawing.SystemColors.Info;
            this.dataGrid1.CaptionForeColor = System.Drawing.SystemColors.WindowText;
            this.dataGrid1.CaptionVisible = false;
            this.dataGrid1.DataMember = "";
            this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
            this.dataGrid1.Location = new System.Drawing.Point(11, 9);
            this.dataGrid1.Name = "dataGrid1";
            this.dataGrid1.Size = new System.Drawing.Size(368, 144);
            this.dataGrid1.TabIndex = 0;
            this.dataGrid1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.dataGrid1_MouseDown);
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point(4, 166);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(383, 23);
            this.label1.TabIndex = 1;
            this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            this.label1.Click += new System.EventHandler(this.Form1_Click);
            // 
            // Form1
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(387, 201);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                        this.label1,
                                        this.dataGrid1});
            this.Name = "Form1";
            this.Text = "鼠标双击事件的例子";
            ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
            this.ResumeLayout(false);
        }
        #endregion

        [STAThread]
        static void Main() 
        {
            Application.Run(new Form1());
        }

        private void TextBoxDoubleClickHandler(object sender, EventArgs e)
        {
            MessageBox.Show("双击事件发生。鼠标双击到的值："+((TextBox)sender).Text.ToString());
        }

        private void TextBoxMouseDownHandler(object sender, MouseEventArgs e)
        {
            if(DateTime.Now < gridMouseDownTime.AddMilliseconds(SystemInformation.DoubleClickTime))
            {
                MessageBox.Show("双击事件发生。鼠标双击到的值："+((TextBox)sender).Text.ToString());
            }
            label1.Text = "TextBox 鼠标按下了。  ";
        }

        private void dataGrid1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            gridMouseDownTime = DateTime.Now;
            label1.Text = "DataGrid1 鼠标按下了。  ";
        }

        private void Form1_Click(object sender, System.EventArgs e)
        {
            label1.Text="";
        }

        private void label1_Click(object sender, System.EventArgs e)
        {
            label1.Text="";
        }
    }
}